Why can't I loop through an array?

Question

I get these numbers seperated by commas from a textarea but I get an error when I try to loop through them. How do I do it? This is my code:

$numbers = $_GET['numbers'];

foreach($numbers as $number){
echo $number;
}

Are you sure $_GET['numbers'] is an array? Apparently it is not. Do var_dump($_GET['numbers']) and see. — John Conde
– John Conde, Commented Apr 15, 2014 at 14:59

Jonan · Accepted Answer · 2014-09-14 15:03:51Z

6

You should first make an array out of $numbers. You can do this by adding this line:

$numbers = explode(',', $_GET['numbers']);

Then, before you use them in the foreach loop you should use trim() to remove whitespace from the start and end:

foreach($numbers as $number){
    $number = trim($number);

    echo $number
}

answered Apr 15, 2014 at 15:00

Jonan

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Comments

Niet the Dark Absol · Accepted Answer · 2014-04-15 15:00:05Z

3

If $_GET['numbers'] is a comma-separated list, it's not an array.

foreach(explode(",",$_GET['numbers']) as $number)

answered Apr 15, 2014 at 15:00

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